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Image for Illustration purposes only. Actual product may vary

4 B 74 SK QD Bushed Sheave for SK

$129.07 Each


  • Free shipping on orders over $20
  • Typically ships in: 1 day
  • Weight: 15.0 lb

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Additional Description

Conventional (wide/classical) sheaves are manufactured from class 30 gray iron (30,000 tensile strength) and can have a maximum speed of 6500 FPM. All Martin sheaves are statically balanced. Dynamic balancing should be considered for any sheaves exceeding 5000 FPM, or if they will be used on equipment where vibration is a problem. Martin has extensive inventories of both QD and TB style V-Belt sheaves to accept “A”, “B”, “C”, and “D” belts.
Material Cast Iron Outside Diameter 7.750 in.
Number Of Grooves 4 Bushing Min Bore Size 0.500 in.
Belt Cross Section A/B Bushing Max Bore Size 2.625 in.
Bushing Style QD Face Width 3.250 in.
Bushing Part Number SK Sheave Construction Solid
Pitch Diameter 7.400 in.
Storage Dimension Length 8.625 in. Weight 17.20 lbs.
Storage Dimension Width 8.625 in. Packaging Yes
Storage Dimension Height 3.880 in.


Material Cast Iron
Outside Dia 7.750"

Alternatives 1 items

Photo Item ID Brand Price Quantity
4 B 74 SK QD Bushed Sheave for SK Martin Sprocket $87.61

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may apply to any return with this manufacturer.

For more information please consult


Product's availability

State of California Proposition 65 Product Warning